Blood is essential for delivering oxygen and nutrients to cells, eliminating waste products, aiding in our immune response, and carrying hormones. The heart is responsible for pushing blood through the body using muscular contractions.
Blood is a crucial part of our body's operating system. It has several key roles, including delivering oxygen and nutrients to cells, removing waste products, aiding in our immune response, and facilitating hormone transportation. The organ that pushes blood through your body is the heart. The heart's muscular walls contract, creating pressure and pushing blood through a network of veins and arteries in a process known as circulation.
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b. organ.
c. tissue.
d. cell. User: Which of the following is an example of epithelial tissue?
a. bone
b. skin
c. fat
d. muscle User: The excretory system consists of which of the following organs?
a. stomach, liver, pancreas
b. lungs, nose, trachea
c. kidneys, ureters, urinary bladder
d. brain, spinal cord, sense organs
B. Atom
C. Electron
D. Molecule
2. According to John daltons Observations, when elements combine in a compound,
A. the ratio of their Masses is always the same.
B. each element contributes an equal number of atoms
C. their volumes are always equal.
D. their masses are always equal